Discovery certificate for object 2018ctb
TNS Astronomical Transient Report No. 19631 [ 2018TNSTR.857....1S ]

Date Received (UTC): 2018-06-20 23:36:20
Sender: Prof. Krzysztof Stanek
Source Group: ASAS-SN

K. Z. Stanek, for the ASAS-SN team report/s the discovery of a new astronomical transient.

IAU Designation: SN 2018ctb
Discoverer internal name: ASASSN-18nr
Coordinates (J2000): RA = 22:01:08.357 (330.28482) DEC = +20:03:05.29 (20.05147)
Discovery date: 2018-06-19 13:12:00 (JD=2458289.05)

Potential host galaxy: KUG 2158+198B

Remarks: In a number of epochs, unknown redshift host galaxy

Photometry

Discovery (first detection):
Discovery date: 2018-06-19 13:12:00
Flux: 16.5 VegaMag
Filter: V-Johnson
Instrument: Brutus
Telescope: ASASSN-Brutus

Last non-detection:
Last non-detection date: 2018-05-29 09:36:00
Limiting flux: 17 ABMag
Filter: g-Sloan
Instrument: Payne-Gaposchkin
Telescope: ASASSN-Payne-Gaposchkin


Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2018ctb